10 Best Red Dot Sights for AR15 & Guns – Reviews & Guide

Best Red Dot Sight

If you are a hunter or are into sports shooting, the chances are that you are willing to spend a fortune on the rifle but the same is not always the case for accessories.

Accessories like the red dot sight are often overlooked, and many people will only get them as an afterthought. But, if you are serious about improving your aim, it is vital to get the best red dot sight.

The red dot sight is a type of non-magnifying (but some modern ones are magnified) reflex sight for firearms and other devices that require aiming. And they are designed to give the user an aimpoint in the form of an illuminated red dot.

With a good red dot sight, you will get a large field of view on the target, quick target acquisition, and limitless eye relief. Also, they can quickly aim at night or in low light conditions.

But, with so many red dot sight models out there, and almost as many opinions on what works best, picking one can be a daunting task.

However, our red dot sight reviews below and buying guide will help you understand what you need to look out for when shopping for these handy rifle accessories.

You can also read other product reviews on the same niche such as glock sight, 1911 sight, shooting rest, shooting mat, plate carrier.

Product Name

MOA

Battery

Material

Weight

Rating

Current Price

1. AT3 Tactical RD-50 Red Dot Sight

2

CR 2032

6061 Aluminum

3.6 oz

4.6

2. OTW Red Dot Sight Micro Riflescope

4

CR 1063

Machined aluminum

4.7 oz

4.0

3. Bushnell Trophy TRS-25 Red Dot Sight Riflescope

3

CR 2032

Aluminum alloy

3.7 oz

4.1

4. Tacticon Armament Predator V1 Red Dot Sight

N/A

CR 2032

Aluminum

13.6 oz

4.6

5. Vortex Optics Strikefire II Red Dot Sight

4

CR 2

30mm aluminum alloy

9.6 oz

4.6

6. Sig Sauer SOR52001 Red Dot Sight

2

Lithium-ion

Aluminum

16.0 oz

4.6

7. CVLife Red Dot Sight With 20mm Rail

3

CR 2032

Aluminum alloy

4.6 oz

4.1

8. Vortex Optics Venom Red Dot Sight

3

CR 1632

Machined Aluminum

1.6 oz

4.5

9. Field Sport Red Dot Sight

4

CR 2032

Aircraft grade aluminum

4.2 oz

4.1

10. Sightmark SM26008 Ultra Shot Red Dot Sight

3

CR123A

Cast aluminum alloy

9.2 oz

4.0

#1. AT3 Tactical RD-50 Red Dot Sight

Editor's Rating: 4.6 out of 5 stars (4.6 / 5)

AT3 Tactical RD-50 Red Dot Sight
  • MOA: 2
  • Battery: CR 2032
  • Material: 6061 Aluminum
  • Weight: 3.6 ounces

The AT3 Tactical 2 MOA red dot sight allows for accurate targeting and aiming with both eyes open, and it comes with 11 red dot brightness settings to make it useful in any lighting condition.

It comes with a tough 6061 aluminum housing that will withstand the rough outdoor environment and the abuse that comes with hunting and sports shooting.

The housing is also fully waterproof to make this a good red dot sight for use in any weather condition. And the circuitry is also shockproof to resist damages from rough handling.

This red dot sight uses a multi-coated and scratch resistant amber lens to provide enhanced image clarity. The matte black anodized finish will resist scratches and also gives the sight a stealthy profile.

With a battery life of up to 50,000 hours on the lowest brightness setting, you can be confident that it will be many years before you need to replace the battery.

And you will not need to spend any money on the battery at the onset as the manufacturer provides the required CR2032 lithium battery

Pros:

  • Multiple red dot brightness settings
  • Fully waterproof housing
  • Exceptional battery life
  • Enhanced image clarity
  • Lifetime warranty

Cons:

  • Not compatible with night vision

#2. OTW Red Dot Sight Micro Riflescope

Editor's Rating: 4 out of 5 stars (4 / 5)

OTW Red Dot Sight Micro Riflescope
  • MOA: 4
  • Battery: CR 1063
  • Material: Machined aluminum
  • Weight: 4.7 ounces

4 MOA red dot sights like this one are always a great choice as they seem to work well for most guns. Their dot size makes them easy for the eye to pick and they are also not too large to obstruct the target.

But besides the MOA, this red dot sight also offers fast centering with a parallax-free dot design that keeps it fixed on the target. And it will allow you to choose from 5 different brightness settings depending on the lighting conditions.

This red dot sight will work for most types of gun and it will come with a 1913 Picatinny 20mm weaver rail base that makes it easy to mount.

The required CR 1063 battery is included in the package to ensure the sight is ready to use when you get it. And the manufacturer will provide a 6-month warranty for quality and service guarantee.

Pros:

  • Fast centering design
  • Easy mount
  • Fits most gun types
  • Highly durable components
  • Multiple brightness level settings

Cons:

  • Battery has a relatively shorter run time

#3. Bushnell Trophy TRS-25 Red Dot Sight Riflescope

Editor's Rating: 4.1 out of 5 stars (4.1 / 5)

Bushnell Trophy TRS-25 Red Dot Sight Riflescope
  • MOA: 3
  • Battery: CR 2032
  • Material: Aluminum alloy
  • Weight: 3.7 ounces

With a lightweight red dot sight like this one, you can be confident that you will not be adding any significant weight to your gun, which is always a good thing.

But, besides the lightweight, Bushnell makes this 3 MOA red dot sight with multicoated optics to ensure that hunters will never have trouble seeing targets even in low light conditions.

This red dot sight is also designed to be 100% shock, fog and waterproof to make it ideal for the outdoor environments and for use in almost any weather condition.

Mounting this red dot sight on your gun is also relatively easy and using it should also be quite straightforward once you figure out the basics.

Like with most other top notch red dot sights, you will also get an unlimited field of view and eye relief. And there will also not be any need for centering thanks to the parallax free design.

Pros:

  • Unlimited field of view
  • Multicoated optics
  • Parallax free design
  • Completely water, shock and fog proof
  • Relatively lightweight

Cons:

  • Adjusting the dot takes relatively more effort

#4. Tacticon Armament Predator V1 Red Dot Sight

Editor's Rating: 4.6 out of 5 stars (4.6 / 5)

Tacticon Armament Predator V1 Red Dot Sight
  • MOA: N/A
  • Battery: CR 2032
  • Material: Aluminum
  • Weight: 13.6 ounces

Predator V1 is a top red dot sight that also has a green dot to make it even more useful for various hunting conditions.

This scope offers super-fast target acquisition and you will never have to worry about centering thanks to the parallax free design. But what makes it a great red dot sight is that it will hold zero even after using it for thousands of shots.

Besides being able to choose between red and green dots, this dot sight also allows you to adjust the brightness to five different levels. And this makes it ideal for shooting at any time of the day.

This red dot scope is engineered to co-witness with iron sights perfectly to make it even more useful to have on your gun.

With the O-ring seals, it is completely waterproof and the nitrogen purge helps to prevent fogging inside the optics. And you will also get an extra battery on your purchase and lifetime warranty for the scope.

Pros:

  • Parallax free design
  • Multiple brightness levels
  • Waterproof and fog proof construction
  • Perfect co-witness with iron sights
  • Lifetime warranty

Cons:

  • Mount screw thread is too coarse

#5. Vortex Optics Strikefire II Red Dot Sight

Editor's Rating: 4.6 out of 5 stars (4.6 / 5)

Vortex Optics Strikefire II Red Dot Sight
  • MOA: 4
  • Battery: CR2
  • Material: 30 mm aluminum alloy
  • Weight: 9.6 ounces

If you are looking for a high-quality red dot sight that will offer super fast target acquisition and an unlimited field of view, the Strikefire II is a great choice.

The red dot sight is made from a 30mmm aluminum alloy chassis that will provide extra high recoil rating. It also undergoes nitrogen purging to make it fog proof and is fitted with O-ring seals to make it waterproof.

This red dot sight comes with fully multi-coated lenses that will provide a clean and bright an unobscured point of view. And you also get unlimited eye relief that will allow rapid target acquisition.

When you buy the Strikefire II you will also get an offset cantilever mount that will allow you to move the sight forward when you want to use it with a magnifier and iron sight.

Another fantastic feature on this red dot sight is the location of power controls at the rear for easy access and to improve functionality.

Pros:

  • Adjustable brightness settings
  • Unlimited eye relief
  • Clean and bright point of view
  • Compact and lightweight construction
  • Easy access power controls

Cons:

  • Relatively shorter battery life

#6. Sig Sauer SOR52001 Red Dot Sight

Editor's Rating: 4.6 out of 5 stars (4.6 / 5)

Sig Sauer SOR52001 Red Dot Sight
  • MOA: 2
  • Battery: Lithium-ion
  • Material: Aluminum
  • Weight: 16 ounces

SOR52001 from Sig Sauer is one of the most popular red dot sights out there, and this is despite being one of the priciest items on our red dot sight reviews.

The 2 MOA red dot scope provides 10 illuminations settings which are 8 for daylight and 2 for night vision to make it ideal for use under any lighting condition.

But, one of the features that many hunters will love is the motion activated illumination which means it will power up when it senses motion and power down when it does not.

And with a battery life of more than 40,000 hours, it will be a long time before you need to buy another battery.

The integrated M1913 Picatinny interface not only makes the scope easy to mount on your gun but also offers industry-standard mounting options to make the scope suitable for various applications.

Pros:

  • Multiple illumination settings
  • Relatively long battery life
  • Motion activated illumination
  • Integrated Picatinny interface
  • Dependable waterproof and fog proof performance

Cons:

  • Relatively small dot size might limit its use

#7. CVLife Red Dot Sight With 20mm Rail

Editor's Rating: 4.1 out of 5 stars (4.1 / 5)

CVLife Red Dot Sight With 20mm Rail
  • MOA: 3
  • Battery: CR 2032
  • Material: Aluminum alloy
  • Weight: 4.6 ounces

If you do not mind using an Allen wrench for adjustment, this is the best red dot sight for the money. It is the most affordable item on our list but it still performs better than many that cost several times its price.

For those that are looking for the best mini red dot sight for hunting or sports shooting, this will also be an excellent choice as it is both compact and lightweight.

It is constructed from aluminum alloy to make it highly durable and with anti-glare reflective coated lenses that will ensure that users get great optical clarity.

The tubeless design ensures that you always get a wide field of view and the scope allows for full windage and elevation adjustment

Pros:

  • Highly durable construction
  • Compact and lightweight
  • Unlimited eye relief
  • Easy and quick retile type selection
  • Fully adjustable windage and elevation

Cons:

  • Adjustment requires you to use Allen wrench

#8. Vortex Optics Venom Red Dot Sight

Editor's Rating: 4.5 out of 5 stars (4.5 / 5)

Vortex Optics Venom Red Dot Sight
  • MOA: 3
  • Battery: CR 1632
  • Material: Machined Aluminum
  • Weight: 1.6 ounces

At a total weight of just 1.6 ounces with the mount included, this is the lightest red dot sight on our list and the best thing about it is that it will work for almost any gun.

This 3 MOA red dot sight ensures rapid target acquisition and also provides a precise point to aim at so that you always get your shots on target fast.

The machined aluminum housing makes this scope rugged and highly durable to ensure that it can withstand the regular abuse that comes with hunting and sports shooting.

With the high-quality and multicoated lens, you always get a clean and wide field of view. And the power and dot intensity controls are conveniently placed on the left side of the scope to make them easy to locate.

You can choose from 10 brightness levels depending on the prevailing lighting conditions but there is also an auto-brightness mode for more convenience.

Pros:

  • Clean and wide field of view
  • Rugged aluminum construction
  • Multiple brightness levels
  • Super sleek windage and elevation adjustments
  • Comes with Picatinny mount

Cons:

  • Relatively shorter battery life at high brightness setting

#9. Field Sport Red Dot Sight

Editor's Rating: 4.1 out of 5 stars (4.1 / 5)

Field Sport Red Dot Sight
  • MOA: 4
  • Battery: CR 2032
  • Material: Aircraft grade aluminum
  • Weight: 4.2 ounces

You do not need to spend a lot of money to get a good red dot sight as this highly affordable one from Field Sport still performs well enough.

If you combine the high-quality aircraft grade aluminum construction with the high-quality lens you get one of the best value red dot sights.

It also comes with 5 different brightness settings each for the green and red dots which make it appropriate for use in almost any lighting condition. And it is also a fog proof and water-resistant scope to make it great for use in all weather conditions.

There is no need for centering when using this red dot sight as it is parallax designed. Also, it comes with a built-in mounting base for easy and convenient mounting.

Pros:

  • Multiple brightness settings
  • No need for centering
  • Built-in mounting base
  • High-grade aluminum construction
  • Relatively affordable

Cons:

  • Dot not as crisp as higher-end models

#10. Sightmark SM26008 Ultra Shot Red Dot Sight

Editor's Rating: 4 out of 5 stars (4 / 5)

Sightmark SM26008 Ultra Shot Red Dot Sight
  • MOA: 3
  • Battery: CR123A
  • Material: Cast aluminum alloy
  • Weight: 9.2 ounces

SM26008 provides both red and green illumination on the reticle to make this a more versatile site. This is also a rugged and highly durable red dot sight thanks to the cast aluminum housing that also includes a protective shield.

It is powered by a common camera battery that will provide up to 2,000 hours of continuous use. And there is also an auto-off function to increase the battery life.

There are some digital switch controls on the side that are easy to locate for quick adjustment of the variable brightness settings.

The red dot sight is parallax corrected to eliminate the need for centering, and it comes with a quick detach weaver mount to make mounting fast and easy.

You also get unlimited eye relief and a wide field of view when using this red dot sight as you would with most other high-quality ones, and it is backed by a limited lifetime warranty.

Pros:

  • Easy and quick mount
  • Low power consumption
  • Exceptionally durable construction
  • Parallax corrected sight
  • Limited lifetime warranty

Cons:

  • Reticle can get blurry after some time

How to Buy the Best Red Dot Sights

How to Buy Red Dot Sights

A red dot sight always seems like a small rifle accessory investment and so many people with often go for the cheapest or what they think will look best on their gun.

But, red dot sights are one of the most crucial accessories when it comes to finding your targets and aiming and so it is vital to make sure you get the best ones. And for this to be so it is necessary to consider the following things.

#1. Battery Free vs. Electronic Red Dot Sight

Although there are many kinds of red dot sights available in the market, most of the times shooters will have to choose between the battery free and electronic.

The only way to make sure that what you choose suits your needs and will work well for you is by understands what both are all about and some of their pros and cons.

Battery Free Red Dot Sight

Battery Free Red Dot Sight

Battery-free or reflex style red dot sights are the kinds that do not use any electronics. And what this means is there is no risk of the electronics failing or malfunctioning.

Many battery-free red dot sights will use tritium for illumination to make them well-suited for low light conditions. However, they are still not very reliable under low light conditions as they can wash out and have no way of increasing the intensity of the dot manually.

But since they do not have electronics or as many features as the electronic red dot sights, most tend to be more affordable.

Pros:

  • No electronic parts
  • Relatively more affordable
  • Highly durable

Cons:

  • Not very reliable for low light conditions

Electronic Red Dot Sight

Electronic Red Dot Sight

Electronic red dot sights are the more modern of the two, and as their name suggests, they use electronic parts that are powered by a battery to make them more reliable and efficient.

The technology used in these red dot sights is always improving and if you get one of the recent models you can be sure of ending up with a feature-rich red dot sight.

Also, their longevity and durability are always improving and there are some models in the market that can last up to a decade of continuous use.

Another significant advantage is that unlike the battery-free types, you can adjust the dot intensity as the lighting conditions change.

But, the presence of electronics makes these red dot sights more prone to malfunctions and also makes them more expensive to buy and maintain.

Pros:

  • Highly reliable in any light conditions
  • More efficient
  • Adjustable dot sight intensity
  • Feature-rich

Cons:

  • Relatively pricier

#2. Dot Size

Dot size is one of the most important factors to consider when it comes to choosing a red dot sight as it has a great effect on targeting and aiming.

While the dot size and pattern might look insignificant for some people, picking the wrong ones can be a major setback. And to simply state it, a dot that is too small is hard to see while one that is too larger might block your target.

Some red dot sights try to correct size issues by having a large circle around the dot but it is still important to choose a size that suits your intended use.

If you are using a standard rifle, a simple 4 MOA will work fine as its small size will allow precision at close to medium range distances and it is still large enough for your eye to pick it.

#3. Reticle

When it comes to the reticle, the most important point to consider is the amount of light that it can let it as this determines where or when you can use the red dot sight.

Many high-quality red dot sights will come with a reticle that illuminates in low light settings which is very useful when hunting at night or under low light conditions.

The right reticle pattern for you will depend on your particular need or when you prefer hunting. If you hunt during the day, a reticle with low light settings will not be important or useful for you.

However, for those that use their rifles at night or under low light conditions, it is a great idea to get a reticle with low light settings and night vision compatibility.

#4. Durability

A good red dot sight should be made of high-quality material that can withstand regular use and the vibrations that come with shooting a rifle.

Red dot sights might not be the most expensive rifle accessories but you still do not want to have to buy a new one after every few uses.

Also, it can be very annoying when your red dot sight cracks or breaks when you need it most and are out hunting where you cannot get a replacement easily.

But even as you look for a high-quality red dot sight with tough materials it is also important to make sure that it is still lightweight enough and will not add any significant weight to your gun.

Conclusion

A red dot sight provides an easy and affordable way of upgrading your gun or improving aiming and targeting for more accurate shots.

The good news is that there are many red dot sights for AR15 and any other gun that you might have, and so you only need to choose one that suits your needs.

Once you identify your shooting goals and consider other factors like dot size, reticle and overall durability of the red dot sight, it should be easy to get the best red dot sight for your gun.

Lastly, also make sure that you mount it correctly because even the best red dot reflex sight will still not serve you will if it is improperly placed.

Tom Brady
 

Tom Brady is an online blogger. He loves outdoor activities such as fishing, camping. He write articles about outdoor activities for this blog to share his understanding and experience.